daffy /ˈdæfi/adjective 1noun 2forms 3 adjective1 •(informal) Somewhat mad or eccentric.Now I'm hungry as a Rocky Mountain lion so come, let's go and get this poor, daffy, tealess widow and wine and dine with her and make it all up. — 1898 noun2 •(informal) A daffodil. •(slang, old-fashioned) Gin.“Do you give the children Daffy, Mrs. Mann?” inquired Bumble, following with his eyes the interesting process of mixing. — 1837 formsdaffies · daffier · daffiest